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3 years ago

Solve the two step equation to find the value of d: 30=-5d-5

Mathematics

1 answer:

mylen [45]3 years ago

5 0

D is equal to 7 because 7x5=35-5=30

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A ship travels 10 miles from Point A to Point B, makes a turn of 112, and travels 16 miles to Point C. If the ship travels direc

marin [14]

This is Pythagorean's Theorem, with one leg being 10 and the hypotenuse being 16. Using those values in the theorem looks like this:
$10^{2} + b^{2} = 16^{2}$
and $100+ b^{2} =256$
and $b^{2} =256-100$
so $b^{2} =156$
Take the square root of both sides to find that b = 12.5

8 0

3 years ago

Chantal is driving on a highway at a steady speed. She drives 55 miles every hour. Let d be the total distance in miles and let

strojnjashka [21]

Answer:

$d = 55h$

Step-by-step explanation:

We are given that Chantal drives at a constant speed of 55 miles per hour.

If, d represents the total distance in miles, and

h represents number of hours, the following equation can be used to express the given situation:

$d = 55h$

For every hour, a distance of 55 miles is covered.

Thus, if h = 1, $d = 55(1) = 55 miles$

If h = 2, $d = 55(2) = 110 miles$ .

Therefore, $d = 55h$ , is an ideal equation that represents the situation given in the question above.

7 0

3 years ago

What does the equation inverse of the function found in part b represent in the contract of the problem ? explain your answer .

gavmur [86]

Answer:

$f^{-1}(x) =\frac{x}{3} - 5$

The inverse function is to calculate the number of rides; given the amount paid

Step-by-step explanation:

Given

$Admission = 15$

$Ride = 3$ per ride

Required

Explain the inverse function

First, we calculate the function

Let x represents the number of rides

So:

$f(x) = Admission + Ride * x$

$f(x) = 15 + 3 * x$

$f(x) = 15 + 3x$

For the inverse function, we have:

$y = 15 + 3x$

Swap x and y

$x = 15 + 3y$

Make 3y the subject

$3y = x - 15$

Make y the subject

$y =\frac{x}{3} - 5$

Replace y with the inverse function

$f^{-1}(x) =\frac{x}{3} - 5$

The above is to calculate the number of rides; given the amount paid

5 0

3 years ago

Find the slope for (-5,4)(-6,-2)

prohojiy [21]

6

Slope is change in y over change in x. -2-4 is -6, and -6- -5 which is -6+5 is -1. -6 over -1 is positive 6, so the slope is 6.

6 0

3 years ago

Read 2 more answers

He paid a deposit of £120 and made 30 monthly payments of £12.<br> How much was the total cost?

adoni [48]

The answer would be 480 and because you multiply 30 times 12 you will get 360 and then you add that to the money he already has which is 120 so the total amount is 480

6 0

3 years ago